Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
IK

Isao Kojima — 16 Patents

DDDdk: 7 patents #18 of 97Top 20%
FDFdk: 5 patents #27 of 324Top 9%
Hitachi: 2 patents #13,388 of 28,497Top 50%
CMCmet: 1 patents #8 of 32Top 25%
FUFujikura: 1 patents #788 of 1,407Top 60%
Yokohama, JP: #325 of 480 inventorsTop 70%
Overall (All Time): #297,097 of 4,157,543Top 8%
16 Patents All Time

Issued Patents All Time

Showing 1–16 of 16 patents

Patent #TitleCo-InventorsDate
10129978 Printed wiring board Yuki Ishida, Masayuki Suzuki, Harunori Urai 2018-11-13
D751612 Three-dimensional printer Yuuki Arake 2016-03-15
8166136 Performance reservation storage management system, storage management method, and storage medium Yusuke Tanimura, Tomohiro Kudoh, Yoshio Tanaka 2012-04-24
7845987 Electrical connector with plug connector and receptacle connector Akio Yamada 2010-12-07
D576103 Electric connector Kazuhiro Sato, Hirokazu Takahashi, Akio Yamada, Hitoshi Kikuchi 2008-09-02
7374432 Connector Yasuyuki Koguchi 2008-05-20
D562774 Electric connector Kazuhiro Sato, Hirokazu Takahashi, Akio Yamada, Hitoshi Kikuchi 2008-02-26
7336418 Optical attenuator Hirotaka Kawai, Hiromitsu Umezawa, Hidenori Nakata, Teruhisa Sahashi 2008-02-26
D539226 Electric connector Akio Yamada, Yasuyuki Koguchi, Hiromichi Kato 2007-03-27
D539227 Electric connector Akio Yamada, Yasuyuki Koguchi, Hiromichi Kato 2007-03-27
7024073 Reflective variable light attenuator Teruhisa Sahashi, Hidenori Nakada, Shohei Abe, Keisuke Ikeda 2006-04-04
7006273 Faraday rotation device and optical device using same Teruhisa Sahashi, Hidenori Nakada, Hirotaka Kawai, Tsugio Tokumasu 2006-02-28
6876480 Farady rotation device and optical device comprising it Teruhisa Sahashi, Hidenori Nakada, Hirotaka Kawai, Tsugio Tokumasu 2005-04-05
6870675 Variable optical attenuator Keisuke Ikeda, Shohei Abe, Yuko Ota, Ikuo Maeda 2005-03-22
4298881 Semiconductor device with double moat and double channel stoppers Shuroku Sakurada, Yoichi Nakashima, Hideyuki Yagi, Tadaaki Kariya, Masayoshi Sugiyama 1981-11-03
4210924 Semiconductor controlled rectifier with configured cathode to eliminate hot-spots Katsumi Akabane, Yoshikazu Takita, Soushi Suzuki, Yasuhiko Ikeda, Koichi Wajima +1 more 1980-07-01